Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'bd07e1bd4fac9543556ae620427518c4df4816699a25a9963d3e497cf33101a4' 
  AND token = 'BuAMu8PTrQzH2os7YS+xMssJOx89mELZZhBkk6wEneE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00024

JSON explain

{
  "query_block": {
    "select_id": 1,
    "message": "no matching row in const table"
  }
}